Alert archive / North Dakota / Mesoscale Discussions in 2007
Mesoscale Discussion 834
The Storm Prediction Center issued this mesoscale discussion at May 18, 2007, 10:02 PM CDT for 15 counties in Minnesota; 39 counties in North Dakota. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- May 18, 2007, 10:02 PM CDT (03:02 UTC)
- Expired
- May 18, 2007, 11:30 PM CDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
All 54 counties
Becker County, MN, Clay County, MN, Grant County, MN, Kittson County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Barnes County, ND, Benson County, ND, Bottineau County, ND, Burke County, ND, Burleigh County, ND, Cass County, ND, Cavalier County, ND, Divide County, ND, Dunn County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, Kidder County, ND, Logan County, ND, McHenry County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Mountrail County, ND, Nelson County, ND, Oliver County, ND, Pembina County, ND, Pierce County, ND, Ramsey County, ND, Ransom County, ND, Renville County, ND, Richland County, ND, Rolette County, ND, Sargent County, ND, Sheridan County, ND, Steele County, ND, Stutsman County, ND, Towner County, ND, Traill County, ND, Walsh County, ND, Ward County, ND, Wells County, ND, Williams County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 75 km from the middle of the area, began a volume at 03:02 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 3.0 hours before the alert went out and 210 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 858 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 2820 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 7:42 PM CDT | Mesoscale Discussion | SPC | Clay, Kittson, Mahnomen, Marshall, Norman, Pennington and 3 more | 2 hr |
Nearby
Mesoscale Discussions in North Dakota, 2007Mesoscale Discussions in Minnesota, 2007Every mesoscale discussion in 2007
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.